This is a DoRA, not your typically made LoRA. A1111 v1.9.0 and up is required to use this. Forge users must download two files, which can be found here. Go to stable-diffusion-webui\ldm_patched\modules and replace the files there.
Weight: 1.0
Trigger + Appearance: rachnera arachnera, monster girl, arthropod girl, spider girl, arachne, multiple legs, carapace, claws, purple hair, extra eyes
Default Outfit: black crop top, underboob, black sleeves, detached sleeves, pelvic curtain, bare shoulders
Add red eyes if necessary.
The results of your generations are dependent on the additional LoRAs, weights, and models you use, so it may not work or come out as consistent as my sample images.